import java.util.HashSet;
import java.util.Random;
import java.util.Set;
public class Main {

    public static String[] cardsArr =new String[54];

    public static void main(String[] args) {
       for(int i=0;i<cardsArr.length;i++){
           cardsArr[i]="扑克牌"+i;
       }
       Set set=new HashSet<>();
       Random rand=new Random();
       int number=rand.nextInt(54);
       while(set.size()<54){
           set.add(cardsArr[number]);
           number=rand.nextInt(54);
       }
        for (Object o : set) {
            System.out.println(o);
        }
        System.out.println(set.size());
    }
}
